Lubricator.



No. 797,867. PATENTED AUG. 22, 1905. I. A. RANDEL.

LUBRIGATGR.

APPLICATION FILED APR. 8. 1905.

rrEn STATES PATENT oEFioE.

IVAR AQRANDEL, or CHICAGO, 1LLINOIS; ASSIGNOR TO MCCORD & oo PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

LUBRICATOR.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed April 8, 1906. Serial No- 254,429.

To all whom it-may concern:

Be it known that I, IvAR A. RANDEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illi- This invention relates to improvements in force-feed 1ubricators;.and the objects 'of the invention will be apparent from the accom panying description.

T e invention consists of the combinations and arrangements of parts hereinafter particularly described and then pointed out in the appended claims.

In the drawings, which illustrate one embodiment of the invention, Fi ure 1 is a vertical sectional view of a forceeed lubricator,

constructed in accordance with my invention, the view being taken on the line 1 1 of Fig. 2. Fig. 2 is a sectional View on the line 2 2 of Fig. 1. Fig. 3 is a plan view of the body of the cooperating pumps, and Fig. 4 is a sectional view on the line 4 4 of Fi 3.

Referring to the drawings, 10 in icat'es a suitable oil-reservoir, which may be of any desired shape and construction, such as the rectangular formation illustrated the drawings. This reservoir is provided with a cover 11, secured in position as by screws 12. A pair of pumps 13 and 14 is located in the reservoir 10, and these pumps are arran ed to cooperate in such manner that the oil is rawn from the reservoir by the pum 13 and delivered thereby to the pump 14, w 'ch forces the oil to thepart to be lubricated.

As shown in Fig. '1, the barrels. of the pumps 13 and 14 have their lower threaded ends screwed into corres ondingl threaded apertures in a body 15, ig. 3, w ch has a tubular extension 16, the end of which 1s screw-threaded and passes through an aperture in the bottom of the reservoir. A nut 17 in threaded engagement with'the end of the extension 16 and cooperating with a shoulder 18 on the said extension serves to secure the pump-body to the reservoir. The tubular extension 16 is designed to have connected thereto in any suitable manner-a tube or pipe (not shown) leading to the cylinder or other part to be lubricated. As shown in Fig. 1, the barrels of the pumps extend through and are clamped to t e cover 11 by means of the shoulders 19 and nuts 20 in threaded enga ement with the up er ends of the said barrjs. A suitable parfiiing 21 is provided for the lunger of the pump 14 in order to prevent t e 011 being forced or leakast the said plunger. e plungers 22 and 23 of the pumps .13 and 14, respectively, are reciprocated by a common actuating mechanism, and meansare referably rovided whereby the stroke of t e pum -p ungers may be regulated simultaneous y and to a similar degree. the present embodiment of the invention the plungers 22 and 23 are connected by a cross-' ead 2.4, one end of which is screwed on the threaded up er end of the plunger23, while its other en is clamped against a shoulder 25 on the plunger 22 b means of a nut 26. The upper end of the unger 23 is provided with an adjustable a utment which takesthe form of a nut 27, screwing on the said plunger and held'in its adjusted position by a set-nut 28.

A shaft 29. is suitably journaled in the ends of the reservoir 10, one end of such shaft, as shown in Fig. 2, havin its bearing in a suitable screw-cap 30, a apted to a'threaded o ening in the end of the reservoir 10. The s aft 29 has fixed thereto a worm-gear 31, which receives motion from a worm 32 on a counter-shaft 33, extending transversely of .29 is provided with an eccentric 35, cooperatin with an eccentric-sleeve 36, having fixe thereto a vertical'rod 37, which is rovided at its upper end with an arm 38, av-

ing an aperture which freely receives the plunger 23 between the head 24 and the abutment 27;

In order to properly guide the rod 37, the reservoir is provided at its .bottom with a guide-socket'39, which receives an extension 40 on the eccentric sleeve 36. When the rod .37 is reciprocated through the medlum of the eccentric 35, owing to the engagementof the arm 38 with the cross-head 24 and ad'ustable ers w' 1 be reabutment 27, the pump-plun h k f y. e stro e o ciprocated simultaneous the pump-plungers may be readily varied by adjusting the abutment 27 so as to eliminate ,or providelost motion to the desired degree between the arm 38 and the pump-plungers.

. The pumps 13 and 14 are of different capacities, and this is due in the present instance to the difference in the size of the pump-barrels and associated plungers, the pump '13 being of greater capacity.

The body is provided with a depending inlet-tube 41, which extends to adjacent the bottom of the reservoir, so as to enable the pump 13 to practically exhaust the contents of the reservoir. The upper end of the tube 41 discharges into a chamber 42, which is provided with a seat 43, to whichis adapted a suitable valve 44. One or more ports 45 in the body 15 afford communication between the barrel of the pump 13 and the chamber 52 and a base-ring 53, the latter having a reduced threaded portion 54, which projects through asuitable opening in. the cover 1 1 and receives a nut 55, securing the base-ring to the cover. A tube 56 passes through the base-ring and extends to about the top of the sight-feed glass, where it is provided with an elbow terminating in a central ni ple 57. A

. trap is located in the sight-feed g ass 51, and

in the present instance this trap comprises a cup 58, having a discharge-open ng in its bot.- torn, from which depends a discharge-tube 59. An overflow-tube 60 has an opening 61 below the level of the top of the on 58, and this overflow-tube projects throng the bottom of the cup 58 and is in alinement with an aperture 62 in the base-ring 53, so that oil passin therethrough may return to the reservoir.

en the upper end of the tube 61 is in line with thenipple 57, as shown in Fig. 2, its opening 61 will be laterally disposed, so that oil cannot pass through it from the nipple.-

In the dpresent instance the base-ring 53, cup 58, an tubes 56 and 59 are integral and pro vided with a head 63. The cap 52, which is in threaded engagement with the head 63,

serves to securethe glass 51 in position.

The pipe 50 is connected to the tube 56 and is provided with a suitable packing 63 at such connection to insure a tight joint. A pipe 65 is connected in a similar manner to the discharge-tube 59, and this pipe 65 discharges' into a passage 66 in the body 15.

The assage 66 enters a valvechamber'67,

whic is provided with suitable seats 68, to which are adapted the upper and lower gravity-valves 69. A passage 70 leads from the chamber 67 to the pump 14, which is proveneer vided with a discharge-passage 71 entering a chamber 72, provided with gravity-valves 73 similar to the valves 69. A suitable port 74 leads from the chamber 72 above the valves 73 and discharges into the tube 16, as shown in Fig, 4. I The valve-chambers 67 and 72 are closed by suitable plugs 75.

' In the operation of the device as the plungers 22 and 23 are reciprocated oil is drawn in by the suction of the.plunger 22 past the valve 44 and is then forced past the valve 47 to the tube 50 on the return'stroke.

the ni ple 57 into the cup 58. The nipple 57 is so ocated as to be visible through the sight-feed glass, so. that the rate of delivery of the ump 13 may be readily observed. As

the oi enters the cup 58 it passes therefrom through the discharge-tube 59 and entering the pipe 65 and passage 66 is drawn past the valves 69 by the suction of the pump 14 and is finallydischarged by the return stroke past the valves 72 to the part tobe lubricated. Inasmuch, however, as the capacity of the pump 13 is greater than that of the pump 14 oil in excess of the capacity of the pump 14 will be deliveredthereto, so that the oil will back up in the tra 58 and rise therein until it reaches the leve indicated by the dotted line in Figs. '1 and 2, when it will overflow through the opening 61 and be diverted from the pump 14. In the present embodi ment of the invention the excess oil drops back into the reservoir through the aperture 62. By-reason of this arrangement there is supplied to the pump 14 a greater uantity of oil than can be handled there y, and hence there is always a supply of oil for such ump equal to the capacity thereof, or at east as much as it will deliver, thereby avoiding the sucking of air by the delivery-pump, as would be the case if a supply of oil less than its capacity were delivered thereto.

The outlet of the overflow-tube 60 is also.

visible through the sight-feed glass. It follows from this arrangement that the rate of delivery by the pump 14 may be readily ascertained by noting for a given timesay for a minute-the difference between the drops falling from the nipple 57 and from the overflow-tube 60. If, for example, the nipple 57 shows a rate of four drops per minute and the overflow-tube a rate of one drop per minute, this will indicate a rate ofdelivery of oil by the pump 14 to the part being lubricated of three drops per minute. Inasmuch as the adjustment of the stroke of the pump-plungers is effected simultaneously and to the same degree, the relative capacities of the pumps remain unchanged when the length of stroke is varied to vary the amount of oil fed. In other words, a greater quantity of oil is always delivered by the pump 13 than can be handled or discharged by the pump 14,

As the oil rises in the tube 50 it enters the tube 56 of the sight-feed device and finally drops from.

and it is immaterial so far as this is concerned whether the rate of delivery of the pumps be difi erent owing to difierence in size thereof or for any other reason, and the oil-trap serves as an equalizer in that it equalizes the quantity of oil delivered by the pump 13 to the capacity of the pump 14.

By reason of the overflowtube 60 the oil is prevented from backing up into the tube 56 and pipe 50, so that the sight-feed device is always operative to disclose the rate of delivery'of the pumps.

Where the lubricator is employed for forcing oil to a part against pressure, as to the cylinder of an engine, the valves of the pum are arranged in palrs, as shown and describe so that in case one valve becomes inoperative-as, for instance, by being held from its seat by foreign matterthe other valve will continue to o erate and prevent the passage of steam into t e reservoir. It is obvious that the device is not limited in its application to such association, but may also be used when it does not operate against pressure.

Having described my invention, what I claim is 1. In a lubricator, the combination With a pair of pumps of unequal capacity, of an oilequalizer constantly maintaining a supply of oil for and to the full capacity of the pump of lesser capacity.

2. In a lubricator, the combination with a reservoir, of a pair of connected pumps, and means for diverting the oil delivered by one pump to the other in excess of the full capacity of such other pum 3. In a lubricator, t e combination with a reservoir, of a pair of cooperating pumps one of which discharges oil to and in excess of the capacity of'the other pump, and means between the pumps for dlvertin the excess oil.

4. In a lubricator, the com ination with a reservoir, of a pair of cooperating pumps, one of which delivers oil to and is of greater capacity than the other, and means between the umps for maintaining a supply of oil to the ull capacity of the pump of lesser capacity and for returning the excess oil to the reservoir.

5. In a lubricator, the combination with a pair of pumps of unequal capacity, of means etween the pumps for maintaining a supply of oil equal to the full capacity of the pump of lesser capacitv and for returning to the reservoir the oil in excess of its capacity.

6. In a lubricator, the combination with a reservoir, of a pair of cooperatin pumps oneof which delivers oil to and is o greater capacity than the other, and a trap between the pumps for maintaining a supp of oil at least equal to the full capacity 0 the said other pump.

7. In a lubricator, the combination with a reservoir, of a pair of cooperatin pumps one of which delivers oil to and is 0? greater capacity than the other, and a tra for maintaining the connection leading t erefrom to the pump of lesser capacity full of oil and having an overflow for diverting the excess 01 8. In a lubricator, the combination with a reservoir, of a pair of umps one of which is of greater capacity than the other, and a trap between the pumps consisting of a cup having an overflow into the reservoir and a discharge-opening, a driptube discharging into the .cup and connected to the pump of greater capacity, a connection leading from the discharge-opening to the other pump, and means for regulating the stroke of the pumps.

9. In a lubricator, the combination with a reservoir, of a pair of pumps, a si ht-feed glass, a trap therein having an over ow and a discharge-opening, a drip-tube connected with one pump and discharging into the trap,

and a connection leadin from the dischargeopenin of the trap to t e other pump.

10. n a lubricator, the combination with a reservoir, of a pair of pumps of different capacities, a sight-feed glass, a trap located therein and consisting of a cup having an overflow-tube and a discharge-opening, a drip-tube connected to the pump of greater capacity and discharging into the cup, and a connection between the dischar e opening of the cup and the other pump, t e dropping of oil from the said tubes being visible through the sight-feed lass.

11. In a lubricator,- t e combination with a pair of pumps of unequal capacity, of a combined oil-equalizer and sight-feed device.

12. In a lubricator, the combination with a reservoir, of a pair of connected pumps of different capacities, and a sight-feed device indicating the difference in the rate of delivery of the pumps.

13. In a lubricator, the combination with a reservoir, of a pair of cooperating pumps, a sight-feed device between the pumps, and a trap therein having an overflow.

14. In a lubricator, the combination with a reservoir, of a pair of connected pumps oi different capacities, and a si ht-feed device rovided with means for indicating the diference in capacity of the pumps.

15. In a lubricator, the combination with a reservoir, of a pair of umps of different capacities, means for regu ating the stroke of the pumps, a sight-feed glass and a trap therein having an overflow for indicating the difference in the rate of delivery of the pumps.

16. In a lubricator, the combination with a pair of cooperating pumps of unequal capacity, of a sight-feed device, a trap therein comprising a cup having a discharge-opening and an overflow-opening above the dischargeopening, a connection from the pump of greater capacity discharging into the cup,

ail.

and a connection between the dischargeopening of the cup and the other pump.

17. In a 1ubricator, the combination with a reservoir, of apair of reciprocating pumps of difierent capacities, means. for simultaneously varying the stroke of the pumpplungers, a sight-feed glass a cup located therein and having an overflow-tube visible through the glass and a discharge-opening, a visible drip-tube discharging into the cup and connected with the pump of greater capacity, and a connection between the discharge-opening of the cup and the other pump. 4

18. In a lubricator, the combination with a pair of cooperating pumps, means for aotu ating the pump-plungers, and means for simultaneously regulating the stroke of the plungers.

19. In a lubricator, the combination with arm on the rod cooperating with the said connection and the abutment to reciprocate the plungers. v

In testimony whereof I afiix my signature in presence of two witnesses.

IVAR A; RANDEL. Witnesses ARTHUR B. SEIBOLD,

ELIZABETH MOLETOR. 

